Statistical analysis of blocking probability for dynamic traffic in WDM optical networks based on Erlang B model

Author(s):  
Rakesh Kumar Maurya ◽  
Jaisingh Thangaraj ◽  
Vishnu Priye
2015 ◽  
Vol 35 (3) ◽  
pp. 100-106 ◽  
Author(s):  
Arturo Benito Rodríguez Garcia ◽  
Leonardo Ramirez Lopez ◽  
Juan Carlos Travieso Torres

<p class="Abstractandkeywordscontent">The results and comparison of the simulation of a new heuristic algorithm called Snake One are presented. The comparison is made with three heuristic algorithms, Genetic Algorithms, Simulated Annealing, and Tabu Search, using blocking probability and network utilization as standard indicators. The simulation was made on the WDM NSFNET under dynamic traffic conditions. The results show a substantial decrease of blocking, but this causes a relative growth of network utilization. There are also load intervals at which its performance improves, decreasing the number of blocked requests.</p>


2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Neeraj Mohan ◽  
Priyanka Kaushal

AbstractThe routing and wavelength assignment (RWA) schemes play an important role in all computer networks. The performance of a computer network and resource utilization largely depend on the RWA. The demand for higher bandwidth is increasing with each passing day, so more efficient RWA schemes need to be devolved to cater the increasing requirements. RWA becomes more challenging for dynamic traffic as the nature and flow of data are not known in advance. In this paper, a dynamic RWA scheme has been proposed for establishing a path in optical networks. The proposed scheme is based upon dynamic conversion sensing algorithm. It can be applied on a number of different network topologies. The proposed scheme is dynamic in nature, which is significantly useful for dynamic traffic grooming. The proposed scheme has been applied on 14 nodes National Science Foundation Network (NFSNet). Simulation results have shown that the blocking probability of this scheme is very low as compared to the existing schemes. So, the proposed dynamic RWA scheme enhances the network efficiency. It is useful for congestion hit networks. The reduced blocking probability in wavelength division multiplexing optical networks leads to better resource utilization and enhanced performance.


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